feat: Update container images to alpine

Author: GeekMasher

.dockerignore

@@ -0,0 +1,5 @@
+Dockerfile
+.env
+target/
+examples/
+

Dockerfile

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+FROM docker.io/library/rust:1.85-alpine as builder
+
+ENV TARGET=x86_64-unknown-linux-musl
+
+WORKDIR /app
+
+COPY . .
+
+# Install dependencies
+RUN apk update && \
+    apk add --no-cache pkgconf alpine-sdk openssl-dev perl musl-dev && \
+    rustup target add ${TARGET} && \
+    cargo build --release --target ${TARGET} && \
+    mv target/${TARGET}/release/codeql-extractor-action target/
+
+FROM docker.io/library/alpine:3.21
+WORKDIR /app
+
+COPY --from=builder /app/target/codeql-extractor-action /usr/local/bin/codeql-extractor-action
+
+ENTRYPOINT ["action"]